this client can be called from a running system,
to do the autoyast configuration.
You have to provide a profile and autoyast will
configure your system like in the profile.
Only stage2 configuration can be done.
yast2 ./ayast_setup.ycp setup filename=/tmp/my.xml
ayast_setup.ycp is part of the autoyast2 RPM since 10.3
If it's installed via RPM you can call it like this:
yast2 ayast_setup setup filename=/tmp/my.xml
yast2 ayast_setup setup help
Example for remote usage:
ssh --batch MyClient \
"screen -D -m yast /usr/share/YaST2/clients/ayast_setup.ycp \
setup filename=/tmp/printer.xml"